Exercise

Calculating Frequentist R-squared

Let's practice calculating the R-squared. By starting with the frequentist R-squared, we can check our formulas for calculating the R-squared by hand, by checking against the value in the frequentist summary. The lm_model and lm_summary objects are already in your environment.

Instructions

100 XP

Print the R-squared value from the lm_summary object
Calculate the variance of the residuals of the lm_model
Calculate the variance of the predicted values of the lm_model
Calculate the R-squared value